Improvement in stone-separators



V H. AIKEN.

Stone Separator.

2 Sheets-Sheet 1.

Patented Dec. 28, .1869.

' 2 Sheets-Sheet 2.

H. Al KEN.

Stone Separator.

No. 98,329. Patented Dec. 28, 1869.

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Jimvenl'or.

THE Noam PETERS co, Pnmumm, WAsmmnun. mu.

waited giant at can.

Letters Patent No. 98,329, dated December 28. 1869.

IMPROVEMENT IN STONI l-SEPARATORS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern':

Be it known that I, HENRY AIKEN, of the city and county of Philadelphia, in the State of Pennsylvania, have invented a new and useful Stone-Separator; and I do hereby declare that the following is a full, clear and exact descripion thereof, reference being had to the annexed drawings, making part of this specification, in which-.-

Figure 1 is a side elevation.

- Figure 2 is a front elevation.

Figure 3 is an axial horizontal section.

Figure 4 is an end elevation.

The same letters are used in all the figures to designate identical parts.

My invention relates to a machine to be used in the preparation of clay for the manufacture of bricks, tiles, pipes, and earthenware, and has for its object the separation of stones and other solid bodies from the crude clay, and etiecting a perfect mixture and pulverizatiou of such clay. To this end,

My invention consists in a tapering cylinder, with longitudinal openings, or slots, in its entire surface, and a tapering shaft, with screw-formed heaters, revolving within said cylinder, whereby the crude clay fed into the larger end of the same, through a suitable hopper, is pulverized and mixed, and all the clay forced through the slots, while the stones, and other solid bodies, are gradually forced to the rear or smaller end of the cylinder, from which they are discharged into another short cylinder attached to and forming an elongation of the larger one.

To enable those skilled in the art to make and use my invention, I will proceed to describe .its construction and operation.

The tapering cylinder A is to. be secured at its larger end to the open side of the stand 0, so as to be in.a nearly horizontal position. It may be made of cast-iron, or other suitable material, and is to be provided with slots in its periphery, as shown. Such slots must be made sufiicieutly narrow to prevent stones, or other solid bodies which are found in crude I clay, from passing through them.

B represents a tapering hollow shaft secured upon the spindle B, whiclrlatter has its hearings in an elongated hub formed upon the side of the stand, concentric with the cylinder A.

The spindle B projects through such hub, and is provided on its outer end with a crank, or pulley, by which to revolve it.

Upon the periphery of the hollow shaft 13, which extends from end to end of the cylinder A, is,sccured spirally, a number of screw-formed heaters, B projecting from such shaft to near the wall of the cylinder, as shown.

C represents the stand, it being a fiat cylindrical box, provided with legs for its support, and terminating on top in a hopper, C.

' Upon one side of this stand is formed, centrally, a hub, C", through which a hole is bored toreceive and support the shaft B. The other side is open up to the hopper, and an annular flange may be formed around such opening, to which to secure the cylin-- necessary to slip the bolts out of the slotted lugs on the stand.

D is another short tapering cylinder, slotted like cylinder A, to the smaller end of which it is secured in any convenient manner, and of which it forms an elongation.

Its outer end isclosed by a gate, D, pivoted thereto at a point, (I. Opposite this point, the gate is provided with a short arm extending outward, and having a lug, cl, formed uponit, to receive a stud, upon which a friction-roller,d, is arranged.

D is a guide, formed upon this end of the cylinder D, along which the friction-roller travels on opening or closing the gate.

A socket is formed in the-arm of the gate, in which to insert a lever, or bar, for operating the same.

Tire operation of this machine may be described as follows: y

The parts having been constructed and arrapged as described, a quantity of crude clay is emptied into the hopper, and the hollow shaft, with its screwformed heaters, put in motion, it being revolved in such direction that the spirally-arranged heaters gradually force the mass to the smaller end of the cylinder. The mass will be thoroughly mixed and pulverized, and the heaters will force it violently against the wall of the cylinder, through the slots of i which the fine clay will be discharged, while stones, and other solid bodies, being too large to pass through its openings, will he carried to its rear end and discharged into the smaller cylinder D, which is emptied,

from time to time, through the gate D.

What I claim as new, and desire to secure by Letters Patent, is

1. Separating stones from clay, by forcing the latter through elongated slots in a tapering cylinder,-and

discharging the former into a suitable receptacle at the small end of such cylinder, substantially in the manner and for the purpose specified.

2. The combination of the tapering slotted cylin der A, shaft B, with screweformed heaters B'flan'd stand 0 with hopper 0, all arranged to operate substantially. as and for the purpose set forth.

3. In combination wit-h the elements of the preceding clause, the tapering cylinder D, substantially as and for the purpose set forth.

4. The combination of the tapering slotted cylinder D with the slotted pivoted gate D, friction-roller d", and guide D when said parts are constructed and arranged as herein set forth.-

In testimony whereof, I have signed my name to this specification. in presence of two subscribing witnesses.

Witnesses: HENRY AIKEN.

B. Enw.'J. ErLs, F. H. Sermons 

